When the SPST switch is open, the 10K pulldown resistor ensures that the N-channel MOSFET transistor is turned off and that the motor is off.
Closing the SPST switch will turn the transistor on and hence the motor on.
The motor is limited to 80.1 rpm but feel free to fine tune the motor settings to whatever rpm range you desire.
Pleas note: This circuit uses an N-Channel enhancement mode silicon gate power field effect transistor which is specifically designed for use with logic level (5V) driving sources in applications such as programmable controllers, automotive switching and solenoid drivers. This performance is accomplished through a special gate oxide design which provides full rated conduction at gate biases in the 3V to 5V range, thereby facilitating true on-off power control directly from logic circuit supply voltages.
Enjoy...😎
